Can't Access Dashboard on Oracle Cloud

The issue I am facing:
I'm attempting to install PiHole with PiVPN on an Oracle Cloud free instance. I was able to get OpenVPN working, but I can't access the PiHole dashboard and DNS resolution seems to be failing when I try and use it. PiHole is running when I access it via SSH, but I get "Connection timed out" errors at [server public ip]/admin whether or not I'm connected to OpenVPN.

Details about my system:
Oracle Cloud always free compute instance running Ubuntu 20.04

What I have changed since installing Pi-hole:
This is a problem with my initial install. I did open the UFW ports like what worked for other people, but it didn't seem to have an effect.